@@ -9,9 +9,11 @@
#ifndef __LINUX_CDNS3_HOST_EXPORT
#define __LINUX_CDNS3_HOST_EXPORT
+struct usb_hcd;
#ifdef CONFIG_USB_CDNS3_HOST
int cdns3_host_init(struct cdns3 *cdns);
+int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd);
#else
@@ -21,6 +23,10 @@ static inline int cdns3_host_init(struct cdns3 *cdns)
}
static inline void cdns3_host_exit(struct cdns3 *cdns) { }
+static inline int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
+{
+ return 0;
+}
#endif /* CONFIG_USB_CDNS3_HOST */
@@ -14,6 +14,18 @@
#include "drd.h"
#include "host-export.h"
#include <linux/usb/hcd.h>
+#include "../host/xhci.h"
+#include "../host/xhci-plat.h"
+
+#define XECP_PORT_CAP_REG 0x8000
+#define XECP_AUX_CTRL_REG1 0x8120
+
+#define CFG_RXDET_P3_EN (1 << 15)
+#define LPM_2_STB_SWITCH_EN (1 << 25)
+
+static const struct xhci_plat_priv xhci_plat_cdns3_xhci = {
+ .suspend_quirk = xhci_cdns3_suspend_quirk,
+};
static int __cdns3_host_init(struct cdns3 *cdns)
{
@@ -39,6 +51,11 @@ static int __cdns3_host_init(struct cdns3 *cdns)
goto err1;
}
+ ret = platform_device_add_data(xhci, &xhci_plat_cdns3_xhci,
+ sizeof(struct xhci_plat_priv));
+ if (ret)
+ goto err1;
+
ret = platform_device_add(xhci);
if (ret) {
dev_err(cdns->dev, "failed to register xHCI device\n");
@@ -56,6 +73,29 @@ static int __cdns3_host_init(struct cdns3 *cdns)
return ret;
}
+int xhci_cdns3_suspend_quirk(struct usb_hcd *hcd)
+{
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+ u32 value;
+
+ /* set usbcmd.EU3S */
+ value = readl(&xhci->op_regs->command);
+ value |= CMD_PM_INDEX;
+ writel(value, &xhci->op_regs->command);
+
+ if (hcd->regs) {
+ value = readl(hcd->regs + XECP_AUX_CTRL_REG1);
+ value |= CFG_RXDET_P3_EN;
+ writel(value, hcd->regs + XECP_AUX_CTRL_REG1);
+
+ value = readl(hcd->regs + XECP_PORT_CAP_REG);
+ value |= LPM_2_STB_SWITCH_EN;
+ writel(value, hcd->regs + XECP_PORT_CAP_REG);
+ }
+
+ return 0;
+}
+
static void cdns3_host_exit(struct cdns3 *cdns)
{
platform_device_unregister(cdns->host_dev);
cdns3 has some special PM sequence between xhci_bus_suspend and xhci_suspend, add quirk to implement it. Signed-off-by: Peter Chen <peter.chen@nxp.com> --- drivers/usb/cdns3/host-export.h | 6 +++++ drivers/usb/cdns3/host.c | 40 +++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+)